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Lattice Boltzmann simulations of liquid-gas and binary fluid systems

Authors
Publication Date
Volume
54
Issue
5
Identifiers
DOI: 10.1103/physreve.54.5041
Disciplines
  • Physics

Abstract

We present the details of a lattice Boltzmann approach to phase separation in nonideal one- and twocomponent fluids. The collision rules are chosen such that the equilibrium state corresponds to an input free energy and the bulk flow is governed by the continuity, Navier-Stokes, and, for the binary fluid, a convectiondiffusion equation. Numerical results are compared to simple analytic predictions to confirm that the equilibrium state is indeed thermodynamically consistent and that the kinetics of the approach to equilibrium lie within the expected universality classes. The approach is compared to other lattice Rnltzmann simulations of nonideal systems.

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